How to debug a dll injected

im sorry for my bad english.
my first question is how to debug a dll injected?
is possible?
i have a dll when i use ollydbg does not looks in executable modules how i get this dll or how i crack/hack this?

@boNutZ possible ^^

If you do not have the source yourself, just use a debugger like OllyDbg.

Yes it is possible.

In the code window of OllyDbg, right-click and go to the 'View' sub menu. A list of modules will be there.

You can also open the memory map window to locate manually mapped modules inside the process if they do not use LoadLibrary.